To create a backup of Office 365 backup software without data loss or you can import the Office 365 file to other mail clients. Then you need to use the Aryson Office 365 Backup and Restore Tool. Because this tool comes with some advanced features that enable you to do so many things this tool allows you to save Office 365 to PST, MBOX, PDF, EML, EMLX, MSG and so many other file formats. However, this tool comes with so many other exciting features like it takes backups of Mailboxes, Public folders, and Archive Folder. However, using this software you can migrate the Office 365 backup file to Gmail, Yahoo, Hotmail, Opera Mail, AOL, Thunderbird, and IMAP. This software is compatible with Windows, Mac and Linux. 

Let's check how this tool works 

Step 01) Run Aryson Office 365 backup software.

Step 02) After this select the backup option and press the next button to move ahead. 

Step 03) After this enter your Office 365 credentials and tick the Assign Impersonation Rights and click on the sign-in button.

Step 04) In the next screen admin and mail user IDs will appear. After this select the mailbox option from select backup option. 

Step 05) Now, select your email folder from a tree-like structure that you want to back up and click on the next button. 

Step 06) After, this select the file format in which you want to convert. 

Step 07) After, that select the path to save button and hit the convert button. 

But, if you want to know the other methods to export office 365 mailbox to PST file then read this article Export Office 365 Mailbox to PST File in Easy Steps.